$ git clone -n https://src.fedoraproject.org/rpms/rust-tracing-serde.git /var/lib/mock/f39-build-1543651-36573/root/chroot_tmpdir/scmroot/rust-tracing-serde
Cloning into '/var/lib/mock/f39-build-1543651-36573/root/chroot_tmpdir/scmroot/rust-tracing-serde'...
$ git fetch origin 2cad1a6851cce3fe58a2bd90c588c919e7dbc888:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-tracing-serde
 * [new ref]         2cad1a6851cce3fe58a2bd90c588c919e7dbc888 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2cad1a6 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild